android聯網工具類
阿新 • • 發佈：2018-12-21
聯網工具類 1.判斷網路是否可用 2.判斷網路是否已連線 3.獲取網路型別 4.判斷是否是WiFi網路 5. 判斷是否是Mobile網路
// 判斷網路是否可用 public static boolean isNetworkAvailable(Context context) { // ConnectivityManager:網路連線管理器.負責迴應網路的連線狀態. // ①.Monitor network connections (Wi-Fi, GPRS, UMTS, etc.) // 監視網路連線; // ②.Send broadcast intents when network connectivity changes // 當網路連線發生改變的時候傳送一個廣播意圖; // ③.Attempt to "fail over" to another network when connectivity to a // network is lost // 當與一個網路斷開的時候,嘗試著進行"故障轉移"到另一個網路; // ④.Provide an API that allows applications to query the coarse-grained // or fine-grained state of the available networks // 提供了一套API來查詢當前可用的網路的"好與壞". // ⑤.Provide an API that allows applications to request and select // networks for their data traffic // 提供了一套API供應用程式來進行網路中資料的傳遞. ConnectivityManager manager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); // 得到一個網路資訊類 NetworkInfo info = manager.getActiveNetworkInfo(); if (info != null) { // 判斷網路是否可用 return info.isAvailable(); } return false; } ===================================================================== // 判斷網路是否已連線 public static boolean isNetworkConnected(Context context) { ConnectivityManager manager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo info = manager.getActiveNetworkInfo(); if (info != null) { return info.isConnected(); } return false; } ===================================================================== // 獲取網路型別 public static String getNetworkType(Context context) { ConnectivityManager manager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo info = manager.getActiveNetworkInfo(); if (info != null) { // 返回網路型別. // int type = info.getType(); // 返回人類可讀的網路型別 return info.getTypeName(); } return null; } ===================================================================== // 判斷是否是WiFi網路 @SuppressWarnings("deprecation") public static boolean isWifiNetwork(Context context) { ConnectivityManager manager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = manager .getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (networkInfo != null && networkInfo.isConnected()) { return true; } return false; } ===================================================================== // 判斷是否是Mobile網路 @SuppressWarnings("deprecation") public static boolean isMobileNetwork(Context context) { ConnectivityManager manager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = manager .getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (networkInfo != null && networkInfo.isConnected()) { return true; } return false; } }